Speaker box

ABSTRACT

A speaker box structure comprising a casing having a front side facing the cone of a speaker contained in said casing and also having a substantially convexly curved outer surface of the rear panel joining said front side and further having a plurality of small perforations formed, in uniform scattered fashion, through said convexly curved rear panel for engagement with a hook provided on a generally substantially upright wall of a room. Thus, the position of the front side of the speaker box can be held at any desired parallel or vertically and/or laterally inclined angle relative to the wall surface by selecting the desired one perforation or two perforations for engagement with the hook.

Umted States Patent [151 3,679,022 Ohashi 1 July 25,1972

[54] SPEAKER BOX 2,401,328 6/1946 Black, Jr ..179/179 3,385,929 5/1968Magyar et al. ..l79/l [72] Invent chasm Fukum" Japan 3,500,953 3/1970Lahti ..l81/3l B [73] Assignee: Nippon Gakki Seizo Kabushiki Kaisha,

Hamamatsu-shi, Shizuoka-ken, Japan Primary Examiner-Stephen .l. TomskyFiled June 2 1970 Attorney-Cushman, Darby& Cushman [2]] Appl. No.:50,756 [57] ABSTRACT A speaker box structure comprising a casing havinga front [30] Foreign Application Priority Data side facing the cone of aspeaker contained in said casing and also having a substantiallyconvexly curved outer surface of j? 2 japan the rear panel joining saidfront side and further having a pluu y apan rality of small perforationsformed, in uniform scattered fashion, through said convexly curved rearpanel for engage- (gr naigkfliglfiblostlr zlsllzg mm with a hookprovided ona generally substantially uprigm i h 181731 B 31 R wall of aroom. Thus, the position of the front side of the c speaker box can beheld at any desired parallel or vertically and/or laterally inclinedangle relative to the wall surface by [56] References cued selecting thedesired one perforation or two perforations for UNITED STATES PATENTSengagement with the hook R1 8,751 2/1933 Weinberger et al ..l8l/3l B 4Claims, 7 Drawing Figures 7 0, 4i IIlIl- A Patented July 25, 19723,679,022

FIG. t )3 G. 6

1. Field of the Invention The present invention is concerned generallywith a speaker box structure, and more particularly, it relates to aspeaker box which can be hung on a substantially upright wall of a roomwith its front side being held at a desired parallel or verticallyand/or laterally inclined position relative to the wall surface of theroom and which is such that this position of the front side may bealtered as desired.

2. Description of the Prior Art In the past, a speaker box of the typethat was hung on a wall was suspended at its rear face from a bent nailor hook extending from a wall surface of a room. In case, however, whenit is intended to reproduce sound and especially when it is intended tomake stereophonic reproduction of sound, it is important that both theposition of installation of the speaker box and the direction of theradiation of reproduced sound be properly selected depending on suchfactors as the directivity of the speaker, the echo characteristic ofthe room and the position of the listener. Since the conventionalspeaker boxes were provided in a square or rectangular box-like frameform having a flat outer surface of the rear panel, it was impossiblefor one to stably fix this speaker box against a wall when it wasdesired to have it hung on a wall at a-desired inclined angle relativeto the wall surface, unless there was used means of some sort or otherto hold the box at such an inclined position.

SUMMARY OF THE INVENTION It is, therefore, an object of the presentinvention to provide a speaker box which permits one to set thereproduced sound radiating face of the speaker at a desired arbitrarydirection.

Another object of the present invention is to provide a speaker boxwhich permits one to select a desired arbitrary position of installationof the speaker box by the provision of a very simplified arrangement ofthe speaker box structure comprising a substantially convexly curvedouter surface of the rear panel and a plurality of uniformly scatteredsmall perforations formed through said rear panel for engagement with ahook or hooks provided on the wall surface on which the speaker box isto be hung.

According to the present invention, there is obtained a speaker boxwhich not only can be stably hung on a wall at a desired angle relativeto the wall surface by merely having one or two of the smallperforations formed in the rear panel engage a hook or hooks provided onthe wall surface, but also permits the position of the box to be alteredas desired.

Other objects, features and attendant advantages of the presentinvention will become apparent by reading the following detaileddescription when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a perspectiverepresentation, as viewed generally from its rear side, of a speaker boxwhich is one embodiment of the present invention;

FIG. 2 is a side elevation of the speaker box shown in FIG. 1 when it ishung against a wall by being engaged at its rear side by two hooksprovided in a horizontal row on a wall surface;

FIG. 3 is a vertical sectional view of the speaker box in FIG.

FIG. 4 is a cross sectional view taken along the line IVIV in FIG. 2;

FIG. 5 is a vertical sectional view of the same speaker box when it ishung against a wall by being engaged at its rear side by two hooksprovided in a vertical row on a wall surface;

FIG. 6 is a cross sectional view taken along the line VI-VI in FIG. 5;and

FIG. 7 is a perspective representation of another embodiment as viewedgenerally from its rear side.

2 DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will bedescribed in further detail in connection with the first embodimentshown in FIGS. I through 6.

Reference numeral 1 represents a speaker. Numeral 2 represents a boxhousing said speaker I therein. The box 2 is of the arrangement that itis made with a hollow hexahedral box with one side panel formed intothat of a part of spherical surface serving as the rear panel surface 3and that a plurality of small through-holes or perforations 5 arescattered in uniform spaced relationship in said rear panel in aplurality of vertical as well as lateral rows, and that a speaker I ismounted on the central portion of the inner face of the front side 4located opposite to said rear panel 3.

In order to hang the wall surface with a speaker box 2 having theaforesaid arrangement, one bent nail or hook 7 is anchored in the wallface 6 or two of such hooks 7, 7 are securely embedded at one ends inthe wall face 6 in spaced relationship relative to each other so thatthe distance therebetween corresponds to that of two of the smallperforations 5, 5 formed in the rear panel 3. Then, any arbitrary oneperforation 5, or two of such through-holes 5 and 5 of the rear panel 3are brought into engagement with said one hook 7, or said two hooks 7and 7.

FIGS. 2 through 4 show an example of the manner of mounting the speakerbox 2 on a wall. Two spaced books 7 and 7 extend from the wall surface 6in a lateral row, i.e., in a row parallel with the plane of the floor ofthe room. Two of the small through-holes 5 and 5 of the rear panel 3 areengaged by said two hooks 7 and 7. In this example, the front side 4 ofthe speaker box 2 is seen to be inclined downwardly in a droopingfashion and also to face slightly toward the right side when the speakerbox is viewed from the foreground thereof. This applies true to aninstance when the speaker box 2 is hung on a single hook 7 extendingfrom the wall surface 6.

FIGS. 5 and 6 show another example of the manner of suspending thespeaker box on the wall surface. In this example, two spaced hooks- 7and 7 extend from the wall surface 6 in a vertical row, i.e., in a rowperpendicular to the plane of the floor. The speaker box 2 is hung fromthe wall surface 6 by having two of the small through-holes 5 and 5engaged by these two hooks 7 and 7 to give bidirectional directivity ofthe reproduced sound as in the preceding example.

It will be understood that, in each of these twoexamples,

the rear panel face 3 of a partial global shape is in point-contact withthe wall surface 6. However, because of the weight of the speaker Iwhich is positioned in the speaker box 2 close to the front sidethereof, the center of gravity of the speaker box 2 is located on theside closer to the front side 4 of the speaker box. Therefore, the rearpanel 3 is urged against the wall surface 6 when the speaker box 2 ishung on the wall in the state of being inclined downwardly andlaterally. Thus, the'speaker box can be held at a quite stable position.The angle of the downward and lateral inclination may be alteredarbitrarily as desired by bringing these two hooks 7 and 7 intoengagement with other two small holes 5 and 5. This applies true to aninstance when the speaker box 2 is hung on a single hook 7 extendingfrom the wall surface 6. In addition, the speaker box 2 of thisembodiment is of four flat peripheral side surfaces between the rearside 3 and the front side 4. Accordingly, it is possible for the user toplace the speaker box 2 on a supporting surface such as a floor or atable in the erect position of the box, in which position the speakerbox stands stably on one of its four flat peripheral side surfaces.Furthermore, in case it is intended to use the speaker box of the typehaving one or more sound-escaping apertures in its rear panel, thepartially spherical rear panel face will provide the advantage that theentire rear panel face 3 will never be blocked by the wall surface.Thus, there is insured a sufiicient communication of air between theinside and the outside of the speaker box 2. This will not cause anydegradation of the tone quality.

Description will hereunder be directed to another embodiment of thepresent invention by referring to FIG. 7

In 7, reference numeral 1 represents a speaker. Numeral 2 represents abox housing said speaker therein. This box 2 is made of a hollowhexahedral box having one of its six sides formed with an arcuate panelrepresenting the surface of a part of a cylinder. This arcuate panel 3serves as the rear panel. A plurality of small through-holes 5 areformed, in uniformly spaced relationship relative to each other, in thearcuate rear panel 3 in vertical as well as lateral rows. Aperturesindicated by a dot-dash line 8 are provided in the rear panel 3 toprovide a speaker box of the type having sound-escaping apertures in therear panel. A speaker I is secured to the central portion of the innerface of the front side 4 located opposite to the rear panel 3. Thisspeaker box 2 also has four flat peripheral sides between the front andthe rear sides. From the aforesaid arrangement of this secondembodiment, it will be understood that the speaker box of thisembodiment is such that the semispherical rear panel face of the firstembodiment is substituted by a convexly arcuate rear panel face. It willbe understood also that the many manners in which the speaker box 2 ofthis second embodiment is installed and their effects are similar tothose described in connection with the first embodiment. Therefore,their detailed description is omitted.

Description has been made on the examples of the rear panel,semispherical or arcuate, having scattered small through-holes formedtherethrough for engagement with a hook or hooks. It should beunderstood that this convexly curved rear panel may be provided in theform of lattice instead of a panel having scatteredsmall through-holes.By the provision of a convexly arcuate or semispherical rear panelhaving openings for engagement with a hook or hooks, the

speaker box will not be subjected to any restriction with respect to theposition in which this box is mounted on a wall surface even when thespeaker box is of the type having sound-escaping apertures in the rearpanel. it should be understood further that said perforated rear panelneed not have a smooth arcuate or spherical face, but that any angledconvex face may be used so long as it permits the positioning of the boxat desired angles on the surface of the wall. It should be understoodalso that the speaker box may not have flat peripheral sides, and thatthe convexly arcuate or semi-spherical or convexly protruding rear facemay start at the edges of the front face.

i claim:

1. A wall mounted loudspeaker enclosure comprising a box having a convexrearface provided with a plurality of perforations scattered thereover;

a wall having at least two hook means thereon protruding therefrom at aspacing equating-to the spacing between at least some of saidperforations;

said hook means being removably received in respective ones of saidperforations to support the loudspeaker enclosure from the wall at adesired spatial orientation with respect to the wall.

2. The wall mounted loudspeaker enclosure of claim 1 wherein the convexrear face is generally part-spherical.

3. The wall mounted loudspeaker enclosure of claim I wherein the convexrear face is generally part cylindrical.

4. The wall mounted loudspeaker enclosure of claim I wherein theperforations are arranged in a plurality of mutually perpendicular rowsand columns.

i i i

1. A wall mounted loudspeaker enclosure comprising a box having a convexrear face provided with a plurality of perforations scattered thereover;a wall having at least two hook means thereon protruding therefrom at aspacing equating to the spacing between at least some of saidperforations; said hook means being removably received in respectiveones of said perforations to support the loudspeaker enclosure from thewall at a desired spatial orientation with respect to the wall.
 2. Thewall mounted loudspeaker enclosure of claim 1 wherein the convex rearface is generally part-spherical.
 3. The wall mounted loudspeakerenclosure of claim 1 wherein the convex rear face is generally partcylindrical.
 4. The wall mounted loudspeaker enclosure of claim 1wherein the perforations are arranged in a plurality of mutuallyperpendicular rows and columns.